| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tapered roller bearing having excellent circularity of lubricating oil, in which stable lubricating performance is developed for a long period, and enabling an increase in the rated load by extending the axial length of rollers. <P>SOLUTION: This tapered roller bearing comprises an inner ring 51, an outer ring 52, the plurality of tapered rollers 53 rollingly disposed between the inner ring 51 and the outer ring 52, and a retainer 54 for holding the tapered rollers 53 at predetermined intervals in the circumferential direction. A flange part 56 for guiding the tapered rollers 53 is formed on only the large diameter side of the outer diameter surface of the inner ring 51. The retainer 54 is formed of a resin and comprises a large diameter side annular part 61, a small diameter side annular part 62, and column parts 63 connecting the large diameter side annular part 61 and the small diameter side annular part 62 to each other. The outer diameter end part 62a of the small diameter side annular part 62 is disposed on the inner diameter side more than the small diameter side end part 63a of the column parts 63. <P>COPYRIGHT: (C)2009,JPO&INPIT |
